CN113913622B - Continuous casting type electroslag furnace with self-arc striking mechanism - Google Patents

Abstract

The invention discloses a continuous casting electroslag furnace with a self-arc striking mechanism, which relates to the technical field of electroslag furnaces, in the invention, when in use, a lifting device is used for lifting an upper furnace shell, then a furnace grid is filled with metal raw materials, then the upper furnace shell is buckled on a furnace shell, then fuel gas is filled into an electroslag furnace body through a fuel gas injection pipe, and electric arcs are introduced through two electrode needles, when the electric arcs are formed under the combustion supporting of the fuel gas, the energy is concentrated, the temperature of an arc area is more than 3000 ℃, and the metal raw materials are smelted; if the arc length is shorter and the two electrode needles cannot generate electric arcs, the adjusting cylinder drives the two electrode needles to move downwards through the mica ceramic insulating plate, and the two limiting blocks are symmetrically arranged and are arranged on the adjacent sides of the two limiting blocks to form inclined planes, so that the lower ends of the two electrode needles are gradually close to each other when the two electrode needles move downwards, and the electric arcs are generated.

Description

A continuous casting electroslag furnace with a self-starting arc mechanism

technical field

The invention relates to the technical field of electroslag furnaces, in particular to a continuous casting electroslag furnace with a self-arcing mechanism.

Background technique

An electric arc furnace refers to an industrial furnace that uses the heat generated by an electric arc to smelt ores and metals. When the gas discharge arc furnace forms an electric arc, the energy is very concentrated, and the temperature in the arc area is above 3000 °C. For smelting metals, the electric arc furnace is more flexible than other steelmaking furnaces. It can effectively remove impurities such as sulfur and phosphorus, the furnace temperature is easy to control, and the equipment occupies a small area. It is suitable for smelting high-quality alloy steel. Electric arc furnaces can be divided into three-phase electric arc furnaces, consumable electric arc furnaces, single-phase electric arc furnaces, and resistance electric arc furnaces according to the arc form.

Traditional electroslag furnaces rely on burning gas and electric arcs to melt solids. The heat transfer efficiency is low, and the melting speed is slow. Moreover, when arcs are introduced, sometimes it is difficult to form arcs.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a continuous casting electroslag furnace with a self-arcing mechanism, which solves the problem that the traditional electroslag furnace relies on burning gas and electric arc to melt the solid state, and the heat transfer efficiency is low , the melting speed is slow, and when the arc is introduced, sometimes there is a problem that the arc is difficult to form.

(2) Technical solutions

In order to achieve the above object, the present invention is achieved through the following technical solutions: a continuous casting electroslag furnace with a self-arcing mechanism, including an electroslag furnace body; a charge grid is arranged above the electroslag furnace body, The top of the burden grid is provided with two limit blocks; electrode needles are arranged between the two limit blocks; the upper end of the electrode needles is fixed on the mica ceramic insulating board; the mica ceramic insulating plate is fixed At the end of the adjustment cylinder push rod;

The electroslag furnace body includes a high-temperature insulation protection plate; two high-temperature insulation protection plates are provided, which are respectively fixed on both sides of the furnace liner; a melt collection tank is provided on the top of the furnace liner, and A melt tank is arranged directly under the melt collection tank; a spray tank is connected through the bottom of the melt tank; an electromagnetic coil is arranged between the spray tank and the melt tank.

As a further technical solution of the present invention, a charging grid is clamped above the melt collecting tank, and a number of grid holes are provided on the charging grid to facilitate the passage of the solution.

As a further technical solution of the present invention, the spray groove is set in a V-shape, and an arc-shaped guide cover is arranged at the liquid injection port at the upper end of the spray groove; the two arc-shaped guide covers are symmetrically arranged, and The opening faces inward.

As a further technical solution of the present invention, the electromagnetic coil includes an iron core, and a coil is wound outside the iron core, and the coil is connected with industrial electricity.

As a further technical solution of the present invention, a furnace shell is provided outside the electroslag furnace body, the furnace shell is set in an open shape, and the top area of the furnace shell is larger than the bottom area of the furnace shell.

As a further technical solution of the present invention, a gas injection pipe is embedded on one side of the shell of the furnace body; the gas injection pipe is arranged in an inclined manner, and the gas injection ends of the gas injection pipe are located between; the other side of the shell of the furnace is also connected through a drain pipe.

As a further technical solution of the present invention, an upper shell of the furnace body is provided above the shell of the furnace body; an adjustment cylinder is fixedly installed at the middle position of the top of the upper shell of the furnace body, and the push rod of the adjustment cylinder penetrates into the furnace body The inside of the upper shell is fixedly connected with the mica ceramic insulating plate.

As a further technical solution of the present invention, there are two limiting blocks, which are arranged symmetrically, and the adjacent sides of the two limiting blocks are arranged as inclined surfaces.

(3) Beneficial effects

The invention provides a continuous casting electroslag furnace with a self-arcing mechanism. Has the following beneficial effects:

1. In the present invention, when in use, first use the hoisting device to lift the upper shell of the furnace body, then fill the furnace material grid with metal raw materials, and then buckle the upper shell of the furnace body on the outer shell of the furnace body, and then use gas injection The tube is filled with gas into the body of the electroslag furnace, and the arc is introduced through two electrode needles. Under the combustion of the gas, the energy is concentrated when the arc is formed, and the temperature of the arc area is above 3000 ° C, so as to melt the metal raw materials;

2. In the present invention, if the two electrode needles cannot generate an arc due to the short arc length, the adjustment cylinder drives the two electrode needles to move downward through the mica ceramic insulating plate. Since there are two limit blocks, It is arranged symmetrically, and the adjacent sides of the two limit blocks are set as inclined surfaces. When the two electrode needles move down, the lower ends of the two electrode needles gradually approach, so as to realize the generation of the arc;

3. In the present invention, the molten metal melted by the electric arc and the gas gathers in the melt collection tank, and fills the entire spray tank through the melt tank. At this time, the electromagnetic coil is energized, and the metal in the spray tank is The liquid is equivalent to the secondary coil, which produces a strong magnetic force and has a circular power. Therefore, the molten metal in the spray tank is sprayed to the metal raw material through the arc-shaped guide cover. From this, the arc and the molten metal can be used to treat the metal at the same time. Metal raw materials are melted, which greatly improves the melting efficiency of metal raw materials and shortens the melting time of metal raw materials;

4. In the present invention, with the continuous increase of molten metal, more molten metal flows into the shell of the furnace body, and is finally discharged from the liquid discharge pipe.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the continuous casting type electroslag furnace with self-arcing mechanism of the present invention;

Fig. 2 is the plane structure schematic diagram of the continuous casting type electroslag furnace with self-arcing mechanism of the present invention;

Fig. 3 is the A-A cross-sectional view of Fig. 2 in the continuous casting type electroslag furnace with self-arcing mechanism of the present invention;

Fig. 4 is a schematic diagram of the internal structure of the continuous casting electroslag furnace with a self-arcing mechanism of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the electroslag furnace body in the continuous casting type electroslag furnace with a self-arcing mechanism of the present invention;

Fig. 6 is a cross-sectional view of Fig. 5 in the continuous casting electroslag furnace with a self-arcing mechanism according to the present invention.

In the figure: 1. Electroslag furnace body; 2. Furnace shell; 3. Gas injection pipe; 4. Drain pipe; 5. Furnace upper shell; 6. Adjusting cylinder; 7. Mica ceramic insulating plate; 8. Electrode Needle; 9. Furnace charge grid; 10. Limiting block; 101. High temperature insulation protection plate; 102. Furnace liner; 103. Melt collection tank; 104. Melt tank; 105. Spray tank; 106. Arc guide Cover; 107, electromagnetic coil.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

Please refer to Figures 1-6, the present invention provides a technical solution: a continuous casting electroslag furnace with a self-arcing mechanism, including an electroslag furnace body 1; a charge is arranged above the electroslag furnace body 1 Grid 9, two limit blocks 10 are arranged on the top of the charge grid 9; electrode pins 8 are arranged between the two limit blocks 10; the upper ends of the electrode pins 8 are fixed on the mica ceramic insulating plate 7 On; the mica ceramic insulating plate 7 is fixed on the end of the adjustment cylinder 6 push rod;

The electroslag furnace body 1 includes a high-temperature insulation protection plate 101; two high-temperature insulation protection plates 101 are provided, which are respectively fixed on both sides of the furnace liner 102; the top of the furnace liner 102 is provided with a melting A liquid collection tank 103, and a melt tank 104 is provided directly below the melt collection tank 103; a spray tank 105 is connected through the bottom of the melt tank 104; There is an electromagnetic coil 107 .

When in use, first use the hoisting device to lift the furnace body upper shell 5, then fill the furnace material grid 9 with metal raw materials, then buckle the furnace body upper shell 5 on the furnace body shell 2, and then pass the gas injection pipe 3 Fill gas into the body 1 of the electroslag furnace, and introduce an arc through two electrode needles 8. Under the combustion of the gas, the energy is very concentrated when the arc is formed, and the temperature of the arc area is above 3000 ° C, so as to melt the metal raw materials .

Embodiment two

In this embodiment, a charge grid 9 is clamped above the melt collection tank 103 , and the charge grid 9 is provided with a plurality of mesh holes for the solution to pass through.

In this embodiment, the spraying groove 105 is arranged in a V shape, and an arc-shaped guide cover 106 is arranged at the liquid injection port at the upper end of the spraying groove 105; the two arc-shaped guide covers 106 are arranged symmetrically, And the opening is inward.

In this embodiment, the electromagnetic coil 107 includes an iron core, and a coil is wound outside the iron core, and the coil is connected with industrial electricity.

The molten metal melted by the electric arc and gas gathers in the melt collection tank 103, and fills the entire spray tank 105 through the melt tank 104. At this time, the electromagnetic coil 107 is energized, and the molten metal in the spray tank 105 is now Equivalent to a secondary coil, it generates a strong magnetic force and has a circular power. For this reason, the molten metal in the spray tank 105 is sprayed to the metal raw material through the arc-shaped guide cover 106. From this, the arc and the molten metal can be used simultaneously. Melting the metal raw material greatly improves the melting efficiency of the metal raw material and shortens the melting time of the metal raw material.

Embodiment three

In this embodiment, the electroslag furnace body 1 is provided with a furnace body shell 2 outside, and the furnace body shell 2 is set in an open shape, and the top area of the furnace body shell 2 is larger than the bottom area of the furnace body shell 2 .

In this embodiment, a gas injection pipe 3 is embedded on one side of the furnace shell 2; the gas injection pipe 3 is arranged in an inclined manner, and the gas injection ends of the gas injection pipe 3 are located Between the needles 8; the other side of the furnace casing 2 is also connected with a drain pipe 4.

As the molten metal continues to increase, more molten metal flows into the furnace shell 2 and is finally discharged from the drain pipe 4 .

Embodiment four

In this embodiment, an upper furnace body shell 5 is provided above the furnace body shell 2; an adjustment cylinder 6 is fixedly installed at the middle position of the top of the furnace body upper shell 5, and the push rod of the adjustment cylinder 6 penetrates to The inside of the upper shell 5 of the furnace body is fixedly connected with the mica ceramic insulating plate 7.

In this embodiment, two limiting blocks 10 are arranged symmetrically, and inclined surfaces are arranged on adjacent sides of the two limiting blocks 10 .

If the two electrode needles 8 cannot generate an arc due to the short arc length, the adjustment cylinder 6 drives the two electrode needles 8 to move downward through the mica ceramic insulating plate 7. Since there are two limit blocks 10, there are two It is symmetrically arranged, and the adjacent sides of the two limit blocks 10 are set as inclined surfaces. When the two electrode needles 8 move down, the lower ends of the two electrode needles 8 gradually approach, so as to realize the generation of the arc .

working principle:

In the present invention, when in use, the upper shell 5 of the furnace body is first lifted by a lifting device, and then the furnace material grid 9 is filled with metal raw materials, and then the upper shell 5 of the furnace body is buckled on the outer shell 2 of the furnace body, and then passed The gas injection pipe 3 fills the electroslag furnace body 1 with gas, and introduces the arc through two electrode needles 8. Under the combustion support of the gas, the energy is very concentrated when the arc is formed, and the temperature in the arc area is above 3000°C, so as to protect the metal Raw materials are smelted;

If the two electrode needles 8 cannot generate an arc due to the short arc length, the adjustment cylinder 6 drives the two electrode needles 8 to move downward through the mica ceramic insulating plate 7. Since there are two limit blocks 10, there are two It is symmetrically arranged, and the adjacent sides of the two limit blocks 10 are set as inclined surfaces. When the two electrode needles 8 move down, the lower ends of the two electrode needles 8 gradually approach, so as to realize the generation of the arc ;

The molten metal melted by the electric arc and gas gathers in the melt collection tank 103, and fills the entire spray tank 105 through the melt tank 104. At this time, the electromagnetic coil 107 is energized, and the molten metal in the spray tank 105 is now Equivalent to a secondary coil, it generates a strong magnetic force and has a circular power. For this reason, the molten metal in the spray tank 105 is sprayed to the metal raw material through the arc-shaped guide cover 106. From this, the arc and the molten metal can be used simultaneously. Melting metal raw materials greatly improves the melting efficiency of metal raw materials and shortens the melting time of metal raw materials;

As the molten metal continues to increase, more molten metal flows into the furnace shell 2 and is finally discharged from the drain pipe 4 .

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. without further restrictions. The phrase "the inclusion of an element defined by ... does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising said element".

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. A continuous casting electroslag furnace with self-striking mechanism is characterized in that: comprises an electroslag furnace body (1); a furnace charge grid (9) is arranged above the electroslag furnace body (1), and two limiting blocks (10) are arranged at the top of the furnace charge grid (9); an electrode needle (8) is arranged between the two limiting blocks (10); the upper end of the electrode pin (8) is fixed on the mica ceramic insulating plate (7); the mica ceramic insulating plate (7) is fixed at the end part of the push rod of the adjusting cylinder (6);

the electroslag furnace body (1) comprises a high-temperature isolation protection plate (101); the high-temperature isolation protection plates (101) are arranged and respectively fixed on two sides of the furnace liner (102); a molten liquid collecting tank (103) is arranged at the top of the furnace liner (102), and a molten liquid tank (104) is arranged right below the molten liquid collecting tank (103); a spraying groove (105) is connected below the melt groove (104) in a penetrating way; an electromagnetic coil (107) is arranged between the spraying groove (105) and the melt groove (104);

the spraying groove (105) is arranged in a V shape, and an arc-shaped guide cover (106) is arranged at a liquid spraying port at the upper end of the spraying groove (105); the two arc-shaped guide covers (106) are symmetrically arranged, and the openings of the arc-shaped guide covers are inward;

the electromagnetic coil (107) comprises an iron core, and a coil is wound outside the iron core and is electrically connected with industry;

the exterior of the electroslag furnace body (1) is provided with a furnace body shell (2);

one side of the furnace body shell (2) is embedded with a fuel gas injection pipe (3); the gas injection pipe (3) is obliquely arranged, and the gas injection end of the gas injection pipe (3) is positioned between the two electrode needles (8); the other side of the furnace body shell (2) is also connected with a liquid discharge pipe (4) in a penetrating way;

the method comprises the steps of filling fuel gas into an electroslag furnace body (1) through a fuel gas injection pipe (3), introducing electric arcs through two electrode needles (8), and smelting metal raw materials by the fact that energy is concentrated when the electric arcs are formed under the combustion supporting of the fuel gas, and the temperature of an arc area is more than 3000 ℃;

the molten metal melted by the electric arc and the fuel gas is gathered in the molten metal gathering tank (103), and fills the whole spraying tank (105) through the molten metal tank (104), the electromagnetic coil (107) is electrified, and the molten metal is melted by the electric arc and the molten metal, so that the melting efficiency of the molten metal is greatly improved, and the melting time of the molten metal is shortened.

2. A continuous casting electroslag furnace with self-arcing mechanism as claimed in claim 1, wherein: a furnace charge grid (9) is clamped above the melt collecting groove (103), and a plurality of grid holes which are convenient for the solution to pass through are arranged on the furnace charge grid (9).

3. A continuous casting electroslag furnace with self-arcing mechanism as claimed in claim 1, wherein: the furnace body shell (2) is arranged to be open, and the top area of the furnace body shell (2) is larger than the bottom area of the furnace body shell (2).

4. A continuous casting electroslag furnace with self-arcing mechanism as claimed in claim 1, wherein: a furnace upper shell (5) is arranged above the furnace shell (2); an adjusting cylinder (6) is fixedly arranged at the middle position of the top of the upper furnace shell (5), and a push rod of the adjusting cylinder (6) penetrates into the upper furnace shell (5) and is fixedly connected with a mica ceramic insulating plate (7).

5. A continuous casting electroslag furnace with self-arcing mechanism as claimed in claim 1, wherein: the two limiting blocks (10) are symmetrically arranged, and inclined surfaces are arranged on the adjacent sides of the two limiting blocks (10).

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